Memory leak

[DarkGess]

Describe the Bug

AllTheLeaks started reporting a memory leak:
[03:53:37] [Server thread/INFO] [AllTheLeaks/]: Server Player Logout: 1
[03:53:37] [Server thread/INFO] [AllTheLeaks/]: Listing memory leaks so far...
[03:53:37] [Server thread/INFO] [AllTheLeaks/]: B: 3245MB / C: 4378MB / Diff: +1133MB
[03:53:37] [Server thread/INFO] [AllTheLeaks/]: Memory Leaks detected: (/atl force_refresh to update)
[03:53:37] [Server thread/INFO] [AllTheLeaks/]: | ChunkAccess:
[03:53:37] [Server thread/INFO] [AllTheLeaks/]: |- LevelChunk (minecraft): 558
[03:53:37] [Server thread/INFO] [AllTheLeaks/]: | Player:
[03:53:37] [Server thread/INFO] [AllTheLeaks/]: |- ServerPlayer (minecraft): 1

Prior to this, there were messages:
[02:05:27] [Server thread/ERROR] [Apotheosis : Adventure/]: Failed to execute LootRule minecraft:netherite_pickaxe/apotheosis:ancient/ANCIENT/1.0!
[02:05:30] [Server thread/ERROR] [Apotheosis : Adventure/]: Failed to execute LootRule minecraft:netherite_leggings/apotheosis:ancient/ANCIENT/1.0!

After that, it's impossible to play - everything is lagging

Reproduction Steps

...

Screenshots and Videos

No response

Crash Report or Log

No response

Operating System

Windows Server 2025

Minecraft Version

1.20.1

Modloader

Forge

Modpack Version

38

Other Mods

No response

[muon-rw]

Please check the Performance Guide; memory usage of 4gb should not be causing your game to be unplayable.

https://wiki.lunapixel.gg/performance-guide